I hope the mods won’t view this as excessive commercialism (it’s not–the app is free with no ads!), but as a wee pet project of late I put together a Small Craft Motions Program (SCraMP) for the iPhone 4/iPod Touch 4G. I’m hoping the boating community (small and large, though I’m really trying to target this as something that could improve safety for small fishing boats) will find it useful.
The app is available free in the app store here.
If you do test it out, I’d love your feedback, and have put together a very short survey here.